CAJ | 학술논문

针对局部失焦图像的模糊区域检测问题，提出一种基于相关性系数和局部标准差的简单有效的检测方法。该方法通过计算模糊图像中各像素的邻域在频域内的对数相关性系数以及在空域内的局部标准差作为描述该像素模糊程度的评价指标，将它们同预设的阈值进行比较以实现失焦模糊区域的检测。实验结果表明，该方法能有效检测出失焦模糊图像中的模糊区域。
침대국부실초도상적모호구역검측문제，제출일충기우상관성계수화국부표준차적간단유효적검측방법。해방법통과계산모호도상중각상소적린역재빈역내적대수상관성계수이급재공역내적국부표준차작위묘술해상소모호정도적평개지표，장타문동예설적역치진행비교이실현실초모호구역적검측。실험결과표명，해방법능유효검측출실초모호도상중적모호구역。
As for detecting the blurred region of partially defocus blurred images,we present a simple and efficient detection method whichis based on correlation coefficient and local standard deviation.Through computing the logarithmic correlation coefficients of the neighbour-hoods of pixels in blurred image in their frequency domains and the local standard deviation in spatial domain,the method uses them as theevaluation indices in describing blur magnitude of each pixel,and then compares them with the preset thresholds to realise the detection ofdefocus blurred region.Experimental results show that this method can detect the blurred regions in defocus blurred images efficiently.